Exporting comments Disqus doens't work

Hi Team,

Disqus is activated on this site:

http://praktijkvader.nl/

We're trying to export the originial Wordpress comments into Disqus, but this doesn't seem to work...

=> http://www.screencast.com/t/02IAg6z4w7MN

It just continues 'Processing' over and over...

Any idea what's going wrong and how to solve it?

Thanks in advance.

André